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  • Bolted/Bonded Joints
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Publications

NSE Composites engineers are primary or contributing authors on the following journal articles, publications, and presentations:

A Fracture Mechanics Based Methodology to Address Face Sheet/Core Disbonding in Composite Sandwich Structures

Krueger, R., Adams, D., Berggreen, C., Hoyt, D. M., Saseendran, V.

2024 American Society for Composites (ASC) 39th Annual Technical Conference, San Diego, CA, November 2024.

Abstract

Sandwich Disbond Certification Overview: Energy-Based Analysis Approach and Applications

Lobo, M., and Hoyt, D.M.

Joint CMH-17-EASA-FAA Workshop on Sandwich Disbonding, Technical University of Denmark (DTU), Copenhagen, Denmark, June 20 -23, 2023.

PDF of Presentation

Sandwich Disbond Certification Overview: Design Criteria and Substantiation for Face Sheet Disbonds

Hoyt, D.M., Fawcett, A., Waite, S., Ilcewicz, L.

Joint CMH-17-EASA-FAA Workshop on Sandwich Disbonding, Technical University of Denmark (DTU), Copenhagen, Denmark, June 20 -23, 2023.

PDF of Presentation

Closed Form 3D Analysis of Flat Laminates

Mabson, G.E., Graesser, D.L., and Graesser, M.A.

2023 AIAA SCITECH Forum (AIAA 2023-1718), 23-27 January 2023, National Harbor, MD.

Abstract

Transport Aircraft Composite Aging

Fawcett, A., Fualdes, C., Enjuto, P., Hoyt, D.M., and Ilcewicz, L.

2020 AIAA SCITECH Forum, 9 January 2020, Orlando, FL.

Abstract

Verification of Closed Form Mixed Mode Strain Energy Release Rate Expressions for Unidirectional Laminate Configurations

Enjuto, P., Lobo, M., and Mabson, G.E.

2019 AIAA SciTech Forum, AIAA 2019-1042, 7-11 January 2019, San Diego, California.

Abstract

Investigation of Stiffening Effects on Notch Growth Trajectory of Composite Stiffened Panels with Large Transverse Notches

Enjuto, P., Lobo, M., Walker, T.H., Peña, G., Cregger, S.E., and Wanthal, S.P.

2019 AIAA SciTech Forum, AIAA 2019-0515, 7-11 January 2019, San Diego, California.

Abstract

Closed-Form Fracture Analysis Based on First Order Shear Deformable Plate Theory

Enjuto, P., Graesser, D.L., Mabson, G.E., and Weckner, O.

2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech Forum, (AIAA 2018-2248), 8 – 12 January 2018, Kissimmee, Florida.

Abstract

Closed-Form Mixed-Mode Strain Energy Release Rate Expressions for Unidirectional Laminate Configurations

Enjuto, P., and Mabson, G.E.

American Society for Composites (ASC) 33rd Annual Technical Conference, Seattle, WA, 24 – 26 September 2018.

Abstract

Application of Aerospace Durability and Damage Tolerance Approaches to Wind Blade Design

Graesser, D.L., and Hoyt, D.M.

2018 Sandia Blade Workshop, August 28-29, 2018, Lubbock, Texas.

PDF of Presentation

Investigation of Stiffening and Curvature Effects on the Residual Strength of Composite Stiffened Panels with Large Transverse Notches

Enjuto, P., Walker, T.H., Lobo, M., Cregger, S.E., and Wanthal, S.P.

2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech Forum, (AIAA 2018-2251), 8 – 12 January 2018, Kissimmee, Florida.

Abstract

A Conceptual Framework for Practical Progressive Damage Analysis of Stiffened Composite Aircraft Structure with Large Notches Subjected to Combined Loading

Walker, T.H.

Presented at the 63rd Composite Materials Handbook-17 (CMH-17) Meeting, 17 March 2015, Salt Lake City, Utah.

Abstract

Energy-Based Stiffness Degradation for Alleviation of Mesh Sensitivity for Progressive Failure Analysis of Center-Notched Composite Panels

Minguet, P.J., Karayev, K.Z., Balabanov, V., Lee, S., Muraliraj, N., Walker, T.H., Nelson, E.E., Robbins, D.

AIAA 2012-1620, 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, Hawaii, 23 – 26 Apr 2012.

Abstract

Residual Strength Evaluation of Typical Aircraft Composite Structures with a Large Notch

Karayev, K.Z., Minguet, P.J., Lee, S., Balabanov, V., Muraliraj, N., Walker, T.H., Nelson, E.E.

Robbins, D., AIAA 2012-1862, 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, Hawaii, 23 – 26 Apr 2012.

Abstract

Fracture Interface Elements For Static And Fatigue Analysis

Mabson, G.E., Deobald, L.R., Dopker, B., Hoyt, D.M., Baylor, J.S., Graesser, D.L.

16th International Conference On Composite Materials (ICCM 16), 2007.

Abstract

Interlaminar Fatigue Elements for Crack Growth Based On Virtual Crack Closure Technique

Deobald, L.R., Mabson, G.E., Dopker, B., Hoyt, D.M., Baylor, J.S., Graesser, D.L.

AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference, 2007.

Abstract

Damage Tolerance of Composites Sandwich Airframe Structures—Additional Results

Tomblin, J.S., Raju, K.S., Walker, T.H., Acosta, J.F.

DOT/FAA/AR-05/33, 2005.

Abstract

Composite Bonded Joints Analysis, Data, and Substantiation – Industry Directions and Technical Issues

Hoyt, D.M., Ward S.H.

FAA Composite Bonded Joints Workshop Seattle, WA , June 16-18, 2004.

Abstract

Boeing CAI: Interlaminar Fatigue Analysis – Interlaminar Fatigue Analysis Based on CAI Interface Element

Hoyt, D.M., Walker, T.H., Graesser, D.L., Mabson, G.E., Deobald, L.R., and Dopker, B.

FAA/ASTM Workshop on Computational Fracture Mechanics for Composites, Salt Lake City, UT March 22-23, 2004.

Applying and Validating Fracture Methods to Structural Analysis of Aircraft Components—Practical Issues and Challenges

Hoyt, D.M., Walker, T.H., Graesser, D.L.

FAA/ASTM Workshop on Computational Fracture Mechanics for Composites, Salt Lake City, UT March 22-23, 2004.

Damage Assessment for Composite Sandwich Structure

Walker, T.H., Graesser, D.L., Ward, S.H., Floyd, J.F., Razi, H., Ploubis, V.

AIAA 2003-1596, 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference, Norfolk, Virginia, 7 – 10 Apr 2003.

Abstract

Strength and Fatigue Life Modeling of Bonded Joints in Composite Structure

Hoyt, D.M., Ward S.H., Minguet, P.J.

ASTM Journal of Composites Technology & Research, Vol. 24, No. 3, pp. 188-208, July 2002.

Abstract

Detailed Analysis of a Complex Bonded Joint

Rousseau, C.Q., Ferrie, C., Hoyt, D.M., Ward, S.H.

Presented at the American Helicopter Society (AHS) Hampton Roads Chapter Structures Specialists’ Meeting, Williamsburg, VA, November 2001.

Abstract

Fuselage Residual Strength—Response and Prediction

Walker, T. H.

FAA Composite Structural Development Workshop, Renton, Washington, Nov. 29 – Dec.1, 2000.

Strength and Fatigue Life Modeling of Bonded Joints in Composite Structure

Hoyt, D.M., Ward, S.H., Minguet, P.J.

American Society for Composites (ASC) 15th Technical Conference, September 2000.

Characterization of Notched Composites Strength with Empirical and Analytical Methods

Bau, H., Hoyt, D.M.

NSE Composites Phase II Final Report to USAF for STTR AF96T009 (AF Contract # F33615-97-C-5013), July 2000.

Abstract

Open Hole Compression Strength and Failure Characterization in Tape Laminates

Bau, H., Hoyt, D.M., Rousseau, C.Q.

Composite Structures: Theory and Practice, ASTM STP 1383, 2000.

Abstract

Fatigue Life Modeling of Composite Bonded Joints in Rotorcraft Structure

Hoyt, D.M., Ward, S.H., Bau, H.

NSE Composites Phase I Final Report to US Army for SBIR A98-029 (USAAMCOM TR 99-D-12, ADB248414), July 1999.

Abstract

Open Hole Compression Strength and Failure Characterization in Tape Laminates

Bau, H., Hoyt, D.M.

presentation to ASTM D-30, Technical Symposium, May, 1999.

Abstract

Progressive Damage Analysis for Notched Compression Strength

Bau, H., Hoyt, D.M.

American Helicopter Society Conference for Affordable Composite Structures, October, 1998.

Advanced Technology Composite Fuselage—Program Overview

Ilcewicz, L., Smith, P.J., Hanson, C.T., Walker, T.H., Metschan, S.L., Mabson, G.E. Mabson, and Willden, K.S.

NASA CR-4734, 1997.

Advanced Technology Composite Fuselage—Materials and Processes

Scholz, D.B., Dost, E.F., Flynn, B.W., Ilcewicz, L.B., Nelson, K.M., Sawicki, A.J., Walker, T.H., and Lakes, R.S.

NASA CR-4731, 1997.

Advanced Technology Composite Fuselage—Repair and Damage Assessment Supporting Maintenance

Flynn, B.W., Bodine, J.D., Dopker, B., Finn, S.R., Griess, K.H., Hanson, C.T., Harris, C.G.

NASA CR-4733, 1997.

Advanced Technology Composite Fuselage—Structural Performance

Walker, T.H., Minguet, P.J., Flynn, B.W., Carbery, D.J., Swanson, G.D., and Ilcewicz, L.B.

NASA CR-4732, 1997.

Abstract

Accurate Characterization of Composite Strength through Empirical and Progressive Damage Methods

Bau, H., Hoyt, D.M.

NSE Composites Phase I Final Report to USAF for STTR AF96T009, April, 1997.

Abstract

Structural Development of Composite Fuselage Cutouts: Window Belt and Door Reinforcements

Polland, D., Dopker, B., Graesser, D., Griess, K., Hanson, C., Scholz, D., and Smith, P.

Sixth NASA Advanced Composite Technology Conference, NASA CP-3326, 1996.

Design Integration of a Composite Aft Fuselage Barrel Section

Hanson, C., Griess, K., Flynn, B., Mabson, G., Polland, D., Walker, T., and Dopker, B.

Sixth NASA Advanced Technology Conference, NASA CP-3326, 1996.

Damage Tolerance of Composite Fuselage Structure

Walker, T., Scholtz, D., Flynn, B., Dopker, B., Bodine, J., Ilcewicz, L., Rouse, M., and McGowan, D.

Sixth NASA/DOD/ARPA Advanced Composite Technology Conference, NASA CP-3326, 1996.

Abstract

Tension Strength with Discrete Source Damage

Poe, C.C. Jr., Harris, C.E., Coats, T.W., and Walker, T.H.

Fifth NASA Advanced Technology Conference, NASA CP-3294, pp. 369-437, 1995.

Fracture Scaling Parameters of Inhomogeneous Microstructure in Composite Structures

Cairns, D.S., Ilcewicz, L.B., Walker, T.H., and Minguet, P.J.

Composites Science and Technology, vol. 53, issue 2, pp. 223-231, 1995.

Tension Fracture of Laminates for Transport Fuselage – Part IV: Damage Tolerance Analysis

Ilcewicz, L.B., Walker, T.H., Murphy, D.P., Dopker, B., Scholz, D.B., Cairns, D.S., and Poe, C.C. Jr.

Fourth NASA Advanced Composite Technology Conference, NASA CP-3229, pp. 265-298, 1994.

Benchmark Panels

Walker, T.H., Ilcewicz, L.B., Bodine, J.B., Murphy, D.P., and Dost, E.F.

NASA CR-194969, 1994.

Abstract

Damage Tolerance Analysis of Composite Transport Fuselage Structure

Dopker, B., Murphy, D., Ilcewicz, L., and Walker, T.

35th SDM Conference, AIAA Paper 94-1406, 1994.

Tension Fracture of Laminates for Transport Fuselage—Part III: Structural Configurations

Walker, T.H., Ilcewicz, L.B., Polland, D.R., Bodine, J.B., and Poe, C.C. Jr.

Fourth NASA Advanced Composite Technology Conference, NASA CP-3229, pp. 243-264, 1994.

Abstract

Far-Field and Near-Field Strain Response of Fiber Placed Structures to Stress Concentrations

Cairns, D.S., Ilcewicz, L.B., and Walker, T.H.

Composites Engineering, Vol. 3, No. 11, pp. 1087-1097, 1993.

Response of Automated Tow Placement Laminates to Stress Concentrations

Cairns, D.S, Ilcewicz, L.B., and Walker, T.H.

Third NASA Advanced Composite Technology Conference, NASA CP-3178, 1993.

Tension Fracture of Laminates for Transport Fuselage – Part II: Large Notches

Walker, T.H., Ilcewicz, L.B., Polland, D.R., and Poe, C.C. Jr.

Third NASA Advanced Composite Technology Conference, NASA CP-3178, pp. 727-758, 1993.

Abstract

Nonlinear and Progressive Failure Aspects of Transport Composite Fuselage Damage Tolerance

Walker, T., Ilcewicz, L., Murphy, D., and Dopker, B.

Computational Methods for Failure Analysis and Life Prediction, NASA-CP-3230, pp. 11-35, 1993.

Abstract

Tension Fracture of Laminates for Transport Fuselage—Part I: Material Screening

Walker, T.H., Avery, W.B., Ilcewicz, L.B., Poe, C.C. Jr., and Harris, C.E.

Second NASA Advanced Composite Technology Conference, NASA CP-3154, pp. 197-238, 1992.

Abstract

Application of a Design-Build Team Approach to Low Cost and Weight Composite Fuselage Structure

Ilcewicz, L.B., Walker, T.H., Willden, K.S., Swanson, G.D., Truslove, G., Metschan, S.L., and Pfahl, C.L.

NASA CR-4418, 1991.

Local Design Optimization for Composite Transport Fuselage Crown Panels

Swanson, G.D., Walker, T.H., Ilcewicz, L.B., Graesser, D.L., Tuttle, M.E., and Zabinsky, Z.

Second NASA/DOD Advanced Composite Technology Conference, NASA CP-3154, pp. 243-262, 1991.

Advanced Technology Composite Fuselage Structure

Ilcewicz, L.B, Smith, P.J., Hanson, C.T., Walker, T.H., Metschan, S.L., Mabson, G.E., and Willden, K.S.

First NASA Advanced Composite Technology Conference, NASA CP-3104, Part 1, pp. 127-155, 1991.

Cost Studies for Commercial Fuselage Crown Designs

Walker, T. H., Smith, P. J., Truslove, G., Willden, K. S., Metschan, S. L., and Pfahl, C. L.

First NASA Advanced Composite Technology Conference, NASA CP-3104, 1991.

Abstract

Intralaminar Fracture Toughness Characterization for Matrix Cracking in Composites

Coxon, B., Walker, T., Ilcewicz, L., and Seferis, J.

Society of Experimental Mechanics, 1987

Abstract

A Singular Finite-Element Analysis of Interface Fracture in Anisotropic Materials

Walker, T.H.

Masters Thesis, University of Washington, 1986.

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